Install the mod with the NMM. As of version 1.7 all options are now accessible in game, so there is no longer an installer.

If hotfixes are present, be sure to download and install them now. Select "No" when prompted to replace the current mod and "Yes to Mod" when prompted to overwrite.

Start Skyrim via the SKSE shortcut you made while watching the tutorial above, and fight some dragons mid-air!

BAIN (Wrye Bash Installation)

Make sure you're running the mentioned version of Skyrim (1.9.32 or later).

Watch the video above and install SKSE (version 1.7.1 or later). The scripts can be managed in BAIN by dropping the archive made for NMM installation into your "%Steam Installation%\steamapps\common\Skyrim Mods\Bash Installers" folder and installing it through Bash instead.

If you have an older version of the mod installed, uninstall it now.

Download the SkyUI archive and install its esp and bsa. (See that page for further instructions or alternate options.)